<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script type="text/javascript" src="./js/jquery-1.9.1.min.js"></script>
</head>
<body>
<div class="swt_box"  style="position: fixed;top:100px;left:calc((100% - 500px) / 2);overflow: hidden ">
    <img src="images/swt.png" width="500"  usemap="#swt">
    <map name="swt" id="swt">
        <area shape="rect" coords="460,10,489,38" href="javascript:void:(0)"  title="关闭提示" onclick="function close_swt(){$('.swt_box').slideUp(400);}close_swt();">
    </map>
</div>
<script>
    // function close_swt(){
    //     $(".swt_box").slideUp(500);
    // }
</script>

</body>
</html>